Yesterday we told you about The Eatery, a new iPhone app from San Francisco-based Massive Health. The app lets users snap photos of their meals, rate how healthy they are, and get a reality check on those ratings from other users. While the app is designed to be fun, it also has a serious point—if people are more aware of what they’re eating, they’ll eat better (at least in theory).

Well, The Eatery is shaping up as a viral success story. In just the first 48 hours since the app’s debut in the iTunes App Store, users have shared 200,000 meal ratings, according to Massive Health intern Andrew Rosenthal. “It’s addictive,” Rosenthal says. “That means we have a big data set about what people are eating, and what they and other people think of those meals.” Read more>>>>